The December weather guide for Wales shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

UK & Ireland holidays

How warm is it in Wales in December?

Daytime temperatures usually reach 8°C in Cardiff, Wales in December, falling to 3°C at night.

How sunny is it in Wales in December?

There are normally 2 hours of bright sunshine each day in Cardiff, Wales in December - that's 19% of daylight hours.

Is the sea cold around Wales in December?

The average sea temperature around Cardiff, Wales in December is 9°C.

Does it rain in Wales in December?

There are usually 19 days with some rain in Cardiff, Wales in December and the average monthly rainfall is 109mm.

Wales sunrise & sunset times for December 2020

Browse the sunrise & sunset times for Wales in December 2020. Select a month to view Wales sunrise & sunset times for the next twelve months. The Wales sunrise & sunset times shown below are for Cardiff.